$800 gaming PC

Approximate Purchase Date: Next week

Budget Range: $750-$800 after rebates

System Usage from Most to Least Important: Gaming (Guild Wars 2/DotA 2/SC2), Reliable

Parts Not Required: Keyboard/Monitor/Mouse/OS

Preferred Website(s) for Parts: Newegg and I have a Microcenter nearby

Country: USA

Parts Preferences: None

Overclocking: No

SLI or Crossfire: No

Proposed Parts:
PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-2500K 3.3GHz Quad-Core Processor ($169.99 @ Microcenter)
CPU Cooler: Cooler Master Hyper 212 Plus 76.8 CFM Sleeve Bearing CPU Cooler ($19.99 @ Newegg)
Motherboard: ASRock Z68 Extreme3 Gen3 ATX LGA1155 Motherboard ($129.86 @ Newegg)
Memory: Corsair 8GB (2 x 4GB) DDR3-1333 Memory ($39.99 @ Newegg)
Hard Drive: Samsung Spinpoint F3 500GB 3.5" 7200RPM Internal Hard Drive ($79.99 @ Newegg)
Video Card: Asus Radeon HD 6850 1GB Video Card ($129.99 @ NCIX US)
Case: Cooler Master Storm Enforcer ATX Mid Tower Case ($79.99 @ Microcenter)
Power Supply: Corsair 650W ATX12V / EPS12V Power Supply ($109.99 @ Newegg)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($17.99 @ Newegg)
Total: $777.78
(Prices include shipping and discounts when available.)
(Generated by PCPartPicker 2012-05-03 21:27 EDT-0400)

I just basically want a confirmation that this build is good to go. Also if there's any better parts within the $800 range or anything like that. Thanks!